21347140

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5897}}^1$

素因数の和:6087

約数の個数: 24

約数和(自身を含む): 45084312

約数和(自身を除く): 23737172

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5897, 11794, 23588, 29485, 58970, 117940, 1067357, 2134714, 4269428, 5336785, 10673570, 21347140]

約数ペア:

[(1, 21347140), (2, 10673570), (4, 5336785), (5, 4269428), (10, 2134714), (20, 1067357), (181, 117940), (362, 58970), (724, 29485), (905, 23588), (1810, 11794), (3620, 5897)]